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解题方法
1 . 某广场设置了一些石凳供大家休息,这些石凳是由正方体截去八个相同的四面体得到的(如图),若被截正方体的棱长是6dm,那么该几何体的表面积是______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829047552d880c8fe5649217c74b5e17.png)
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2 . 已知直线
与圆
交于
两点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fad8d7d3275c4d36b991727e3578a43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c424f7c2786a4c14d9efe94a065cefe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
A.2 | B.3 | C.4 | D.6 |
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3卷引用:专题08[2837] 平面解析几何
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解题方法
3 . 如图,在高为2的正三棱柱
中,
是棱
的中点.
(2)求三棱锥
的体积;
(3)设
为棱
的中点,
为棱
上一点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78490ad8408d831761e8ebdafa25978c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ce034f2d6b7ac835ce46d58ea945ec.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d022b233edaffb56b84d53bac243e1c6.png)
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解题方法
4 . 三棱锥
中,
,且
两两垂直.设三棱锥
的外接球和内切球的表面积分别为
和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccf7f2ab49f7615b72b6312ec58898f.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b4c1ae9c57d51e27bbdb001122d3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bb1063e139610045f3bca5ca0b2766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfed7c5c9bcfcad494834d43a17fdb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d201c61dcba1051e424e9051efaa589d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccf7f2ab49f7615b72b6312ec58898f.png)
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3卷引用:专题07 球与几何体的切、接及立体几何最值问题-期末考点大串讲(苏教版(2019))
(已下线)专题07 球与几何体的切、接及立体几何最值问题-期末考点大串讲(苏教版(2019))陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题陕西省安康市高新中学、安康中学高新分校2024届高三下学期5月模拟预测数学(理)试题
5 . 正方体
的棱长为2,
分别是
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc54c1c5160a8e9c2acc60b737a1f182.png)
面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deedcb96962d9c30e1e88b16d54c4e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc54c1c5160a8e9c2acc60b737a1f182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d47e5be88e89d0d042c56d2d6942b0.png)
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4卷引用:专题06 空间角、距离的计算-期末考点大串讲(苏教版(2019))
(已下线)专题06 空间角、距离的计算-期末考点大串讲(苏教版(2019))四川省大学考联盟2024届高三三模联考数学(文科)试题福建省厦门双十中学2024届高三下学期高考热身考试数学试题(已下线)专题08 立体几何大题常考题型归类-期末考点大串讲(人教B版2019必修第四册)
名校
解题方法
6 . 在三棱柱
中,侧面
底面
,
,
,
,
为
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721d15abc97b4dbc7f46eac4fd06e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8943a18d524103d5f6c60bef0b71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25936291abb6432ed5a710ebf0ea195.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a98287a302228ece1fa53c5c66c590f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
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7 . 如图,四边形
和四边形
都是梯形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67be899bc131ec1b9921ae9787c40d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0a3fa475b24f57ecd79c681259561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67be899bc131ec1b9921ae9787c40d5.png)
,且
分别为
的中点.
是平行四边形;
(2)求证:
四点共面.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67be899bc131ec1b9921ae9787c40d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0a3fa475b24f57ecd79c681259561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67be899bc131ec1b9921ae9787c40d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c894f26fcbeaa5f3f2e827627348b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b2254859f5dcbe39f1d9dde5a6eceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66536b6d4dd18013c97f385c3224416.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d6e29d79a1bd34722833d4c059644f.png)
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解题方法
8 . 如图,在直三棱柱
中,
,
,
,
,点
是
的中点.
平面
;
(2)求证:
;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a96fd5c137199d2d8e89ce2d7f70c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5e1093a147c521c5e8d0d5e266db54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4557a368725226f2c8ea2efb7d30e478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429228f882da65a8e0064c88d02b8e40.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1847074419e82f9f04b9596e4fbe19.png)
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5卷引用:第六章 立体几何初步(单元测试,新题型)-同步精品课堂(北师大版2019必修第二册)
(已下线)第六章 立体几何初步(单元测试,新题型)-同步精品课堂(北师大版2019必修第二册)(已下线)专题08 立体几何异面直线所成角、线面角、面面角及平行和垂直的证明 -《期末真题分类汇编》(北师大版(2019))广东省六校(北江中学、河源中学、清远一中、惠州中学、阳江中学、茂名中学)2023-2024学年高一下学期联合质量监测考试数学试题(已下线)专题09高一数学下学期期末考点大汇总-《期末真题分类汇编》(人教B版2019必修第四册)(已下线)专题08 期末必刷解答题专题训练的7种常考题型归类-期末真题分类汇编(北师大版2019必修第二册)
名校
解题方法
9 . 正四棱锥
的底面积为3,外接球的表面积为
,则正四棱锥
的体积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d80f16c3278cd252725625dcf253cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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10 . 下列说法正确的是( ).
A.以直角三角形的一条边为轴旋转一周形成的旋转体是圆锥 |
B.以直角梯形的一腰为轴旋转一周形成的旋转体是圆台 |
C.圆柱、圆锥、圆台都有两个底面 |
D.圆锥的侧面展开图是扇形,这个扇形的半径大于圆锥的高 |
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